Bone Saddle For Classical Guitar Rosette Gradient 90 Saddle will save you time when upgrading to a new bone saddle for your classical guitar. The saddle is designed with the requirements of a higher bass string area and lower treble string area. ( usually 4 mm & 3 mm ) This saddle is 90% completed, making it a breeze to retrofit into your bridge. String contact area is finished and ready to go. 80 mm long, 3 mm thick Gradient height of 9.2 mm to 7.5 mm. IF YOU ORDER (2) TWO EA., WE WILL SEND YOU THE FULL INSTALL KIT. THIS INCLUDES 3 GRADES OF SANDING AND FINISHING PAPER.